The song unites people The voice changes the world In the 10th year of King Youngjo, Joseon Dynasty goes through a dire phase of looting and human trafficking. A street singer, Hak-gyu (Lee Bong-geun) travels all over Joseon in search for his kidnapped wife, Gan-nan (Lee Yu-ri) with a drummer Dae-bong (Park Chul-min) and a secretive poor nobleman (Kim Dong-wan). One by one, the band of entertainers led by the singer is filled with excitement as the Eight Provinces of Joseon's traveling theater begins. Filled with joy and sorrow, they bring a show together. In the era of corruption, the song of people starts to resonate to change the world.